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funtech/supracan.cpp: implement DMA fill, needed by staiwbbl
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@angelosa
angelosa committed Sep 7, 2024
1 parent 874e156 commit 36f358d
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Showing 2 changed files with 47 additions and 19 deletions.
42 changes: 25 additions & 17 deletions hash/supracan.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -9,9 +9,8 @@ license:CC0-1.0
<year>1995</year>
<publisher>AV Artisan Corp.</publisher>
<notes><![CDATA[
Gameplay logic falls apart once either side attacks (side becomes unresponsive, pieces stop moving, collision won't work etc.)
[video] priority issue on versus presentation screen
[video] layer 0 won't show left side character, scrollx = 0x0080
[video] layer 0 won't show left side character, scrollx = 0x0080 + global flip x
[video] wrong tilemap paging for layer 1 on game over
]]></notes>
<info name="serial" value="F001" />
<info name="alt_title" value="福爾摩沙大對決" />
Expand All @@ -29,8 +28,11 @@ Gameplay logic falls apart once either side attacks (side becomes unresponsive,
<notes><![CDATA[
[video] sprites may need buffering (noticeable on gameplay jumps)
[video] intro raster effect is slightly off (btanb)
[irq 5] 2nd fighter stage used with global flip y + mosaic (lake effect)
[video] enables window effect during ending and credits
]]></notes>
<info name="serial" value="F002" />
<info name="alt_title" value="三國志 武將爭霸" />
<part name="cart" interface="supracan_cart">
<dataarea name="rom" width="16" endianness="big" size="3145728">
<rom loadflag="load16_word_swap" name="sangofgt.bin" size="3145728" crc="a4de6dde" sha1="f4bed63775130a75eb9c50b32e0cf50d1a7b8f50" offset="0" />
Expand All @@ -44,12 +46,15 @@ Gameplay logic falls apart once either side attacks (side becomes unresponsive,
<publisher>Funtech</publisher>
<notes><![CDATA[
Uses [video] blending during attract and title screen
Broken [video] ROZ during intro
Wrong [video] ROZ paging for title screen
Broken [video] during intro, uses bitmap mode
Broken [video] sprites during gameplay
[video] uses per-tile priority during gameplay
]]></notes>
<info name="serial" value="F003" />
<info name="alt_title" value="邪惡之子" />
<part name="cart" interface="supracan_cart">
<!-- TODO: sram -->
<dataarea name="rom" width="16" endianness="big" size="2097152">
<rom loadflag="load16_word_swap" name="16005.cu5" size="2097152" crc="9f6119a7" sha1="67ae9e7f99e1c3054ea54d53dbbba7792ef45134" offset="0" />
</dataarea>
Expand All @@ -63,7 +68,7 @@ Broken [video] sprites during gameplay
<notes><![CDATA[
[video] intro should sprite clip against active display area.
[video] title animation blanks some sprites.
[video] concealed layer 0 priority during gameplay, and several tiles have wrong colors.
[video] uses per-tile priority during gameplay
]]></notes>
<info name="serial" value="F004" />
<info name="alt_title" value="音速飛龍" />
Expand All @@ -79,13 +84,12 @@ Broken [video] sprites during gameplay
<year>1995</year>
<publisher>C&amp;E Soft</publisher>
<notes><![CDATA[
Unresponsive [joy] inputs
[video] garbage tiles during attract demo (cleares some after upper 1st inning)
[video] ROZ is misaligned
[video] ROZ is misaligned during intro
]]></notes>
<info name="serial" value="F005" />
<info name="alt_title" value="超級中華職棒聯盟" />
<part name="cart" interface="supracan_cart">
<!-- TODO: sram -->
<dataarea name="rom" width="16" endianness="big" size="2097152">
<rom loadflag="load16_word_swap" name="16005.0" size="2097152" crc="ccf6829b" sha1="17a413803d8749fbe9643ca56d703afd64569b9f" offset="0" />
</dataarea>
Expand All @@ -96,6 +100,9 @@ Unresponsive [joy] inputs
<description>Journey to the Laugh ~ Xi You Ji</description>
<year>1995</year>
<publisher>Funtech</publisher>
<notes><![CDATA[
Can potentially hang, [maincpu] tight loops for $e80300 bit 7 high
]]></notes>
<info name="serial" value="F006" />
<info name="alt_title" value="嘻遊記" />
<part name="cart" interface="supracan_cart">
Expand All @@ -110,13 +117,13 @@ Unresponsive [joy] inputs
<year>1996</year>
<publisher>Kingformation</publisher>
<notes><![CDATA[
Wrong [video] layer 1 priority and colors during intro
[video] text layer is concealed and sprites are cutoff at character select
[video] layer 0 draws garbage, should use 8bpp region
[video] sprites are cutoff at character select
[video] wrong position for text markers in load game screens
]]></notes>
<info name="serial" value="F007" />
<info name="alt_title" value="超級光明戰史" />
<part name="cart" interface="supracan_cart">
<!-- TODO: sram -->
<dataarea name="rom" width="16" endianness="big" size="3145728">
<rom loadflag="load16_word_swap" name="16007.0" size="2097152" crc="56c1c3fb" sha1="249e2ad6d8d40ecd31eda5a1bd5e5d0f47174a27" offset="000000" />
<rom loadflag="load16_word_swap" name="08007.1" size="1048576" crc="fc79f05f" sha1="7ce2e23ea3fd25764935708be4d47bf1a9843938" offset="0x200000" />
Expand All @@ -131,6 +138,7 @@ Wrong [video] layer 1 priority and colors during intro
<info name="serial" value="F008" />
<info name="alt_title" value="非洲探險" />
<part name="cart" interface="supracan_cart">
<!-- TODO: sram -->
<dataarea name="rom" width="16" endianness="big" size="1048576">
<rom loadflag="load16_word_swap" name="08003.bin" size="1048576" crc="dc3b7b84" sha1="6dcbd7923203da7892915595d65ee668afbf0339" offset="0" />
</dataarea>
Expand All @@ -142,8 +150,9 @@ Wrong [video] layer 1 priority and colors during intro
<year>1996</year>
<publisher>Funtech</publisher>
<notes><![CDATA[
Missing [video] a sprites row cloud strip during intro
Too fast in gameplay, controls [irq 3] as FRC
[video] intro has a glitchy cloud row strip
[video] intro shows some vertical strips of garbage when title screen dragon appears
Erratic gameplay speed, controls [irq 3] as FRC, can potentially hang
]]></notes>
<info name="serial" value="F009" />
<info name="alt_title" value="賭霸" />
Expand All @@ -156,15 +165,14 @@ Too fast in gameplay, controls [irq 3] as FRC

<software name="magipool" supported="no">
<description>Magical Pool ~ Mo Bang Zhuang Qiu</description>
<year>199?</year>
<year>1996</year>
<publisher>Funtech</publisher>
<notes><![CDATA[
Crashes after few seconds in attract, controls [irq 3] as FRC
Erratic gameplay speed, controls [irq 3] as FRC
[video] should blend white, and use layer 1 as masking effect (sprites goes under it)
[video] game select has missing table layer
[video] character select has misaligned sprites
[video] gameplay has corrupted sprite markers
[video] gameplay has wrong priority for layer 1
[video] billiard cue sprite cut off left side (should wraparound)
]]></notes>
<info name="serial" value="F010" />
<info name="alt_title" value="魔棒撞球" />
Expand Down
24 changes: 22 additions & 2 deletions src/mame/funtech/supracan.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1251,7 +1251,24 @@ template <unsigned ch> void supracan_state::dma_w(offs_t offset, uint16_t data,

for (int i = 0; i <= m_dma_regs.count[ch]; i++)
{
if (data & 0x1000)
// staiwbbl wants to fill both VRAM and work RAM at startup,
// and expects to transfer word for VRAM, byte for work RAM.
// Not providing this will cause all kinds of video and logic glitches.
// TODO: pinpoint DMA modes here (at least upper bits 14-13 should do)
if (data == 0xa800)
{
if ((m_dma_regs.dest[ch] & 0xfe0000) == 0xf40000)
{
mem.write_word(m_dma_regs.dest[ch], 0);
m_dma_regs.dest[ch] += dest_dec ? -2 : 2;
}
else
{
mem.write_byte(m_dma_regs.dest[ch], mem.read_byte(m_dma_regs.source[ch]));
m_dma_regs.dest[ch] += dest_dec ? -1 : 1;
}
}
else if (data & 0x1000)
{
mem.write_word(m_dma_regs.dest[ch], mem.read_word(m_dma_regs.source[ch]));
m_dma_regs.dest[ch] += dest_dec ? -2 : 2;
Expand All @@ -1270,6 +1287,9 @@ template <unsigned ch> void supracan_state::dma_w(offs_t offset, uint16_t data,
m_dma_regs.source[ch] += src_dec ? -1 : 1;
}
}
// TODO: are these DMA cycle steal?
// There's no indication of a DMA status read so far that would indicate burst.
//m_maincpu->spin_until_time(m_maincpu->cycles_to_attotime(m_dma_regs.count[ch] * 2));
}
else if (data != 0x0000) // fake DMA, used by C.U.G.
{
Expand Down Expand Up @@ -1568,7 +1588,7 @@ void supracan_state::update_frc_state()

// magipool: sets 0xa201 / 0x0104 at startup, sometimes flips frequency to 0x0046
// - causes a crash at boot if too fast;
// - takes roughly 6 seconds for a title screen kanji to move right-to-left;
// - takes roughly 6 seconds for a title screen individual kanji to move right-to-left;
case 1:
m_frc_timer->adjust(attotime::from_hz(30));
break;
Expand Down

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